Concerns over aviation interference delay US C-band rollout

The mid-band 5G spectrum known as C-band, which US operators shelled out billions for at the start of this year, has encountered an unexpected obstacle.
According to a report in the WSJ, US operators AT&T and Verizon are delaying their planned rollout of services across the 3.7-4.2 GHz band because comms regulator FCC and aviation regulator FAA are worried they may interfere with airplane cockpit safety systems. Presumably they also use that frequency.
“Aviation safety and technology l